Fastening device



Oef. 2, 1928.

J. M. THOMSON ET AL FASTENING DEVICE Filed Feb. 1, 1928 Ja//Vj//Iaaz/Iifa/aMia/l/ PETER HHRZJY lPatented Get. 2, 1928.

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jaar' JOHNMALCOLM Tnet/niort,Y or Lone-rsLANn orTY, 'NEW YORK,Ann-:PETER HARDY, v i f on isi-unserern..solennemente. t

Fasrniirns naviera.

vApplication nled `Fenrualy This invention relates to improvements infaste-ning devices'- and has particular reference to such a device forthe attachmentrto the end of an elastic cord by which the same;

may he detachably connected to an attaching eye. v y

The primary vobject of the invention resides in a fastening device foruse iny connection with the elastic cord of exercisingr apparatus forpreventing the cord from twisting and knotting up which tends to wealrenand shorten the lifeof the same. v 1

Another object is to provide a fastening device which embodies a pair ofpositive locking :laws adapted to receive the part to which a cord isadapted to be attached and which will positively prevent accidentalunfasteninvention resides in certain novel construction and combinationand arrangement of parts, the essential features of which are` anelastic cord.

characters, the numeral 10 designates our im-v Y forremovablyrconnecting the cord .to an at-A Figure 2 is a side elevationof the fastener with the pivoted jaw in an open position.

Figure 8 is a vertical longitudinal sectional view on the line 3--3 ofFigure 2. y

Figure 4 is 'a vertical transverse sectional view on the linee-lf ofFigure 3.

Figure 5 is ar perspective view showing the manner of attaching thefastening device to one end of an elastic cord'.` Y

Referring to the drawing by .reference proved fastening device in' itsentirety ,andl 11' an elastic cord to which 1t vis attaehed. Elasticcord of this lnnd is commonly used 1n eX- ercising apparatus andv greatdifficulty hasv been experienced in providing some means taching partwhich will prevent accidental 1, 192e. `seien Noy '251,169..r

disconnection of the cord subjected to i:

the sudden strains to ywhich 4it is subjected, and for preventingvtwisting and lrnotting vof the cord. j These objections are overcome bythe fastening device 10 which will now be fully elfr'plained.l Y Z 1 ThefasteningV device 10 includesy .a taper.- ing sleeve 12 open throughoutits length and which hasv its inner walls provided 'jwith spaced annularribs 13. The large end, ofthe sleeve is open at its sides and is bridgedby a yole or bridge 1e.; r-Csshaped stationary jaw 15 Yis swiveled in'the bridge leas at 16 and has its free hooked end reduced in thicknessas at 17, the upperfflat face 'of which is provided with a lil-shapedrib 18 disposed in axial alignment with the swivel connection. Pivotedto the jaw 15 as at 19 is a swingable C-shaped jaw 2O which isdisposedon the same plane as the jaw 15 and has its hooked end reducedinthickness as at 21l and adapted to overlie the 'reduced portion 17 .ofthe avv 15 when in a closed position. The inner Hat face of the reducedend of therjaw 2O is provided with a V-shaped groove or notch 22 adaptedto receive the rib 1,8- and lock the jaws in a closed position at whichtime 'they co-act to provide an enclosed eye or loop. The reduced endsof the Ajaws are substantially resilient to allow therib to snap intothe notch during the Vswinging of the movable aw to a closed position,and for permit? tingk the jaws to be sprung to release them when itisdesired to move the` jaw 20to an open position. Y

Carried by the end ofthe elastic cord to silient ring 23 which 'isclamped about the cord. The fastening device is attached by passing oneend of the cord through theenlarged mouth of the sleeveand pulling thelsame therethrough as shown in Figure 5 of the drawing. The ring 23ylimits the passage v ofthe cord through the sleeve and snaps bey hindone ofthe ribs 13.. rlhe converging which the fastener is connected is asplit re- '100'A y vwalls of the sleeve tend to ,compress the split`ringtojall'oiv itV to pass over certain of the ribs whereupon itexpands and looks the cord' Y f against accidental separation from thevfastener.y Y Y y From the foregoing description, it will be seen thatanfelastic cord equipped with ourA improved'fastening device mayberemovably connected .toV a fixed eye, antl`when so.

yconnected the cord may be turned with re- Yze spect to the part to'which it is connected by reason of the swivel connection 16. This willprevent any possibility of the cord becoming twisted and knotted andwill `serve to prolong the life of the same. Vhen the jaws are `in aclosed posit-ion, the same are firmly locked against accidental opening,thus assuring a positive connection between the cord and its connectedpart. j Y

While we have described what we deem to be the most` desirableembodiment of our invention, it is obvious that manyof the details maybe varied without in anyway departing from the spirit of our invention,and we f therefore do not vlimit ourselves to theY exact details ofconstruction herein set forth nork to anything less than the whole ofour invention limited onlyy by the appended claims. '7, K y v What isclaimed as new is l l. In a combination with an elastic cord, aresilient ring fixed adjacentone Vend thereof, a fastening deviceincluding a sleeve member vmember having a converging bore therethrough,and ribs projecting from the walls of said bore, said cord adapted ltobe pulled through the bore of sainV sleeve member to l cause theresilient ring to be compressed by reason of engagement with theconverging Vwalls of said bore for seating behind one or said ribs.

In testimony whereof we hereby our signatures.

JOHN MALCOLMTHOMSON. PETER HARDY.

